Space Lander STEM ChallengeThis STEM activity is one of our favorite engineering design challenges! The combination of marshmallows (or ping pong balls) and aliens makes this a winning STEM challenge! In the Space Lander Challenge, student teams build a lander using the engineering design process to keep two marshmallow "aliens" or "astronauts" inside a cup as it is dropped from various heights. Using straws, index cards, and mini marshmallows or cotton balls, students apply concepts of shock ab